WO2006035618A1 - 生体シミュレーション装置およびプログラム - Google Patents
生体シミュレーション装置およびプログラム Download PDFInfo
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- WO2006035618A1 WO2006035618A1 PCT/JP2005/017116 JP2005017116W WO2006035618A1 WO 2006035618 A1 WO2006035618 A1 WO 2006035618A1 JP 2005017116 W JP2005017116 W JP 2005017116W WO 2006035618 A1 WO2006035618 A1 WO 2006035618A1
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16B—BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
- G16B5/00—ICT specially adapted for modelling or simulations in systems biology, e.g. gene-regulatory networks, protein interaction networks or metabolic networks
Definitions
- the present invention relates to a living body simulation apparatus and the like having a structure in which functions can be easily added and customized in response to elucidation of living body functions.
- E-Cell is a biological simulation device that simulates cell functions.
- Non-Patent Document 1 M. Tomita, K. Hashimoto, K. Takahashi, T. Shimizu, Y. Matsuzaki, F. Miyoshi, K. Saito, S. Tanida, K. Yugi, JC Ven ter, and CA Hutchison III, ⁇ E- CEI: software environment for whole ⁇ cell simulationj in Bioinformatics, vol. 15, no. 1, pp. 72 -84, 1999
- Non-Patent Document 2 L. M. Loew, and J. C. Schaff: The Virtual Cell: a software environment for computational cell oiology, Trends Biotechnol, 19-10, 401/406, 2001
- a first aspect of the present invention is a biological simulation apparatus that simulates a biological function by executing a biological function method, which is a method for simulating a biological function, based on object orientation.
- a biological model structure information storage unit that stores biological model structure information having information indicating a biological instance that is a part belonging to one class and a hierarchical structure of the biological instance. It holds a method for processing variable information, which is information related to variables, and is a node class that is a class and a inheritance class of the node class, based on the biological model structure information in the biological model structure information storage unit!
- a hierarchical structure configuration class that is a class provided with a method for configuring a hierarchical structure of the biological instance on the memory; and A response class that is a class inherited from the hierarchical structure class and has a biological function method as a method for simulating a biological function, and an inheritance destination of the hierarchical structure class
- An analysis class that is a class and has a method for acquiring and analyzing the execution result of the biological function method, holds the analysis class, interprets the biological model structure information, and based on the hierarchical structure in the hierarchical structure configuration class Then, the biological instance is mapped on the memory, and the state of the biological instance is changed by executing the method of the class to which the biological instance belongs in a predetermined order, and the state of the changed biological instance is changed to the analysis class. Simulate biological functions by providing analysis methods and outputting analysis results It is a biological simulation device.
- the second invention is a visitor class that holds a method for accessing one or more biological instances mapped on the memory and performing a predetermined process.
- the analysis class method is the execution result of the visitor class method. It is a living body simulation device that acquires an analysis result based on a result.
- the third invention is an inheritance class of the reaction class with respect to the first invention and the second invention, and receives information on a class having a predetermined biological function method as a method.
- the living body simulation apparatus further comprising a receiving unit.
- the fourth aspect of the invention relates to biological model structure information storing biological model structure information having two or more biological parts that are parts constituting the living body and information indicating a hierarchical structure of the biological parts.
- a storage unit a variable information storage unit that stores variable information that is information related to a living body variable, an arithmetic expression storage unit that stores an arithmetic expression for simulating a biological function for each biological function,
- a hierarchical structure configuration unit that configures a hierarchical structure of the two or more biological parts on a memory, and one or more biological components that configure the hierarchical structure
- a biological simulation including an execution unit that executes one or more arithmetic expressions corresponding to biological functions realized by the biological component, and an output unit that outputs an analysis result based on the result executed by the execution unit Device.
- the output unit acquires a state of the biological part after the execution unit executes an arithmetic expression;
- This is a biological simulation apparatus including an output unit that outputs an analysis result based on a state.
- the sixth invention in contrast to the fourth and fifth inventions, is characterized in that the arithmetic expression storage unit includes a biological function identifier that identifies a biological function and one or more arithmetic expressions.
- a biological simulation apparatus further comprising: a reception unit that receives biological calculation formula information; and a storage unit that stores biological calculation formula information received by the reception unit in the calculation formula storage unit. .
- the present invention can provide a living body simulation apparatus and the like that can easily incorporate the functions of a living body and the like that have been elucidated by the development of research in the field of medical biology.
- FIG. 1 is a basic class hierarchy diagram of the biological simulation apparatus according to the present embodiment.
- Figure 1 is a class diagram described in UML format.
- This living body simulation apparatus has a structure based on object orientation. That is, this living body simulation apparatus has a class and an instance belonging to the class.
- the class also holds executable functions (hereinafter referred to as “methods” where appropriate).
- an instance is a part constituting a living body and a living body instance that is a part belonging to one class.
- Examples of biological instances include extracellular fluids, cells, Na channels, and K channels. Extracellular fluid is an instance of fluid that is outside the cell.
- a cell is an instance that represents a cell.
- Na channel and K channel are instances indicating the Na channel and K channel of the cell, respectively.
- the node class is the highest class.
- the inheritance class of the node class is a hierarchical class.
- inheritance class power analysis class and reaction class of hierarchical structure class is the highest class.
- the node class is a class that holds a method for processing variable information that is information related to biological variables.
- Node classes may belong to instances such as K (potassium ion), Na (sodium ion), and Vm (membrane potential).
- methods that process variable information include a method that obtains the value of an instance (getValue ()) and a method that sets a value in an instance (variable) (setValue (value)).
- ⁇ SetValue (value) '' is the value ⁇ value '' This method is set in the instance.
- variable of the node class is used to read the biological instance force belonging to the reaction class and the analysis class during simulation and to write the value from the calculation method belonging to the biological instance.
- the hierarchical structure class is an inheritance class of the node class, and is a class that holds a method for forming a hierarchical structure of biological instances on a memory based on biological model structure information.
- the method of the hierarchical structure class performs the following processing.
- the biological model structure information is information that includes a biological instance that is a component that constitutes a living organism, and that is a component that belongs to one class, and a hierarchical structure of the biological instance.
- the biological model structure information is, for example, a file.
- the biological model structure information is described in XML, for example. Note that XML is suitable for describing the hierarchical structure.
- the method of the hierarchical structure class is a method for configuring a memory structure corresponding to the hierarchical structure of the instance included in the biological model structure information. More specifically, this is a method for allocating the pointer area of the parent instance constituting the hierarchical structure in memory. In the reserved pointer area, the address of the area where the instance of the child instance exists is stored.
- the reaction class is an inheritance destination class of the hierarchical structure configuration class, and holds a class having a biological function method as a method indicating an arithmetic expression for simulating the biological function as an inheritance destination class.
- This class holds a method that executes a biological function method.
- it is necessary to define a class that holds biological function methods necessary for simulation of each biological function as the inheritance class of the reaction class.
- the analysis class is a inheritance class of the hierarchical structure class, and holds a method for acquiring and analyzing the execution result of the biological function method.
- the execution result of the biological function method is the state of the instance changed by the execution of the biological function method (for example, the value of the membrane potential or the K concentration).
- the method for outputting the result in the analysis class may output the result in any manner. For example, one method outputs a graph of changes in membrane potential. Other methods output the change in potassium ion concentration as a numerical value. Further, Other methods visually output heart motion. Note that output is a concept that includes display on a display, printing on a printer, sound output, transmission to an external device, and the like.
- the biological model structure information storage unit is a component that constitutes a living body, and stores biological model structure information having information indicating a biological instance that is a component belonging to one class and a hierarchical structure of the biological instance. Yes.
- the biological model structure information is, for example, a file described in XML.
- the biological model structure information storage unit is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.
- the biological model structure information may be information (by communication, manual input, etc.) supplied to the external biological simulation apparatus.
- the simulation apparatus includes the following execution unit.
- the execution unit interprets the biological model structure information in the biological model structure information storage unit, maps the biological instances on the memory based on the hierarchical structure in the hierarchical structure configuration class, and performs a predetermined order (which is determined in advance).
- the order of the biological instances can be determined by interpreting the calculation formula and executing the method of the class to which the biological instance belongs, and the state of the biological instance is changed and the state of the changed biological instance is analyzed.
- the biological function is simulated by giving it to the class method and outputting the analysis result.
- the method of the class to which the biological instance belongs is, for example, a method of the inheritance class of the reaction class, and is a biological function method that is a method for realizing a predetermined biological function.
- the execution unit can usually be realized from an MPU or memory.
- the processing procedure of the execution unit is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (de
- Step S201 The stored biological model structure information is read out.
- Step S202 The biological model structure information read out in step S201 is interpreted (for example, XML data is parsed), and an instance hierarchical structure is constructed based on the biological model structure information. Data having such a hierarchical structure is placed on a memory. For the process of building the instance hierarchy, use the flowchart in Figure 3. And will be described in detail.
- Step S203 The biological function instances belonging to all reaction classes are processed.
- the instance processing is to execute the biological function method of the class to which the instance belongs and its upper class on the instance.
- Biological functions are simulated by processing powerful instances. Integral calculations are performed for biological function formulas described by differential equations. Details of the processing of one instance will be explained using the flowchart of FIG.
- Step S204 Output the processing results of the instances belonging to all analysis classes. Simulation results of biological functions can be obtained by powerful output.
- Step S205 It is determined whether or not the force is sufficient to end the processing. If not, the process returns to step S203. Whether or not to end the process can be determined by detecting that the specified time has passed since the simulation was started, or by detecting that the end instruction has been received. Also good. In addition, the termination trigger does not matter.
- the information of the predetermined time is included in the biological model structure information, for example.
- Step S301 Assign 1 to the counter i.
- Step S302 Biological model structure information (Here, for example, the biological model structure information is a file, and the definition of the instance information exists in each line.)
- the definition of the first line is the instance. It is determined whether the information is the definition of the information. If the instance information is defined, the process proceeds to step S303. If the instance information is not defined, the process proceeds to step S308. If the definition of the definition instance of the i-th row is not defined, another process corresponding to the definition may be performed.
- Step S303 The instance information that is information about the instance in the definition of the i-th row is acquired.
- the instance information is, for example, an instance name and a class name.
- the instance information is, for example, the value and unit of the variable when the instance is a variable.
- Step S304 The instance information acquired in step S303 is set.
- Instant The setting of the instance information is to write the instance information on the memory.
- Step S305 It is determined whether or not a parent instance exists in the instance corresponding to the i-th row. If there is a parent instance, go to step S306, and if there is no parent instance, jump to step S308.
- Step S306 A link area (child instance area) for setting the parent-child relationship is secured in the memory.
- Step S307 The address on the memory where the parent instance is defined is written in the memory secured in step S306. This address write process establishes a link that defines the parent-child relationship.
- Step S308 It is determined whether or not the force has been processed for all the rows of the biological model structure information. If not, go to step S309. If completed, return to upper function.
- Step S309 The counter i is incremented by one.
- Step S302 The counter i is incremented by one.
- FIG. 4 is a flowchart for explaining details of processing of one instance.
- Step S401 The class name to which the instance belongs is acquired.
- Step S402 1 is assigned to the counter i.
- Step S403 It is determined whether or not the i-th method exists in the class specified by the class name acquired in step S401 and a class higher than the class. If the i-th method exists, go to step S404, and if the i-th method does not exist, return to the upper function.
- Step S404 The i-th method is executed for this instance.
- Step S405 The counter i is incremented by one. Return to step S403.
- a specific operation of the biological simulation apparatus in the present embodiment will be described.
- FIG. 5 is data showing an example of biological model structure information.
- the biological model structure information is described in XML, and is composed of one file.
- FIG. 6 is a class hierarchy diagram to be simulated, in which some class definitions are added as inheritance classes of reaction classes to the basic class hierarchy diagram described in FIG.
- the definition of the class to be used is normally received by the receiving unit and stored in the biological simulation apparatus.
- 6 is a class diagram described in the format of UML as in FIG.
- each box in FIG. 6 describes the class name (upper box) and the methods belonging to the class (lower box).
- a class defined as a subclass of the reaction class holds one or more biological function methods that represent arithmetic expressions for simulating biological functions.
- the cell class has a method that indicates an arithmetic expression (usually a differential equation) that indicates the behavior of the cell.
- the channel class holds a method that shows an arithmetic expression (usually a differential equation) that shows the behavior common to all channels.
- the Na channel and K channel hold a method that shows an arithmetic expression (usually a differential equation) that indicates the behavior unique to the Na channel or K channel! /.
- the living body simulation apparatus starts the simulation in an energetic situation.
- the trigger for starting the simulation may be an instruction from the user or an instruction from an external device.
- the biological simulation apparatus reads the biological model structure information in FIG.
- the biological simulation apparatus interprets biological model structure information. Since the biological model structure information is an XML file, the biological model structure information can be interpreted using the XML Versa technology.
- the biological simulation apparatus obtains a hierarchical structure of instances shown in FIG.
- the instance “extracellular fluid” owns (aggregates) the variables “Na” and “K” and the instance “cell”.
- the instance “cell” has variables “Na”, “K”, “Vm” and instances “Na channel”, “K channel”. Instances form a hierarchical structure based on ownership (aggregation) relationships.
- FIG. 7 a broken-line arrow indicates “reference”. That is, for example, the instance “Na channel” refers to the variables “Na” and “Vm”.
- Figure 7 is an instance diagram described in the UML format.
- “Na channel” on line 13 in the biological model structure information of FIG. 5 corresponds to “Na channel” of FIG.
- 21 in the biological model structure information of Fig. 5 The line “K channel” corresponds to “K channel” in FIG.
- “link name “ Nao '”” on the 17th line in the biological model structure information in FIG.
- the biological simulation apparatus processes the four instances “extracellular fluid”, “cell”, “Na channel”, and “K channel”.
- the processing order is, for example, from a deep instance. That is, the biological simulation apparatus processes instances in the order of “Na channel”, “K channel”, “cell”, and “extracellular fluid”. In this way, processing from the deep instance of the hierarchy in the hierarchical structure is because it is convenient to express the overall behavior as a set of behaviors of individual functional elements.
- the instance process is to execute a method of a class to which the instance belongs and a higher class.
- the biological simulation apparatus acquires and outputs the method execution result.
- Such output processing is realized by methods of the analysis class.
- FIG. 8 shows the value of “Vm” (membrane potential) possessed by the instance “cell”.
- a living body simulation apparatus or the like that can easily incorporate a new living body function. Therefore, it enables highly accurate simulation that fits the actual situation, thereby facilitating future medical research and progress.
- a new biological function can be simulated simply by providing a class for each biological function as a subclass of the reaction class and defining an arithmetic expression for simulating the biological function as a method of the class.
- the method of the analysis class may be a visual output by force animation or the like that outputs the analysis result as a graph.
- one or more living body instances mapped on the memory are accessed, a method for performing a predetermined process is held, a visitor class is further held, and an analysis class of The method may be a class hierarchy that obtains the analysis result based on the execution result of the visitor class method.
- Figure 9 shows the class hierarchy. 9 is also a class diagram described in the format of UML, like FIG.
- the biological simulation apparatus further includes a reception unit that is a successor class of the reaction class and receives information on a class having a predetermined biological function method as a method.
- the structure which comprises may be sufficient.
- the new class information input means may be anything such as a numeric keypad, keyboard, mouse, or menu screen.
- the reception unit can be realized by a device driver for input means such as a numeric keypad or a keyboard, or control software for a menu screen.
- the new class information includes class name, class method, and so on.
- the processing in the present embodiment may be realized by software.
- This software may be distributed by software download or the like.
- this software may be recorded and distributed on a recording medium such as a CD-ROM.
- the software that realizes the information processing apparatus in the present embodiment is the following program.
- this program is a program that causes a computer to simulate a biological function, and is a component that constitutes a living organism.
- the biological model Based on the biometric model structure information in the structure information storage unit, a hierarchical structure configuration class that is a class that holds a method for configuring the hierarchical structure of the biological instance in the memory, and inheritance of the hierarchical structure configuration class Calculation for simulating biological functions in the first class
- a reaction class that holds a class having a biological function method that represents an expression as a method as an inheritance class, a class that holds a method that executes the biological function method, and an inheritance class of the hierarchical structure class
- An analysis class holding a method for obtaining and outputting the execution result of the biological function method, interpreting the biological model structure information, and based on a hierarchical structure in the hierarchical structure class Mapping the biological instance on the memory; executing a method of the class to which the biological instance belongs; changing the state of the biological instance by executing the
- the program accesses one or more biological instances mapped on the memory, holds a method for performing a predetermined process, further holds a visitor class, and the method of the analysis class includes the method
- the analysis result may be acquired based on the execution result of the visitor class method.
- the program may cause the computer to further execute a reception step of receiving information on a class that is an inheritance class of the reaction class and includes a predetermined biological function method as a method.
- the operation result of the biological simulation apparatus is the same as that of the biological simulation apparatus of the first embodiment.
- FIG. 10 shows a block diagram of the living body simulation apparatus.
- the biological simulation apparatus includes a biological model structure information storage unit 101, a variable information storage unit 102, an arithmetic expression storage unit 103, a hierarchical structure configuration unit 104, an execution unit 105, an output unit 106, a reception unit 107, and an accumulation unit 108. Be prepared.
- the output unit 106 includes a state acquisition unit 1061 and an output unit 1062.
- the biological model structure information storage unit 101 stores biological model structure information having two or more biological parts that are parts constituting the living body and information indicating the hierarchical structure of the biological parts.
- the biological model structure information is, for example, a file described in XML as described above.
- the biological parts are, for example, cells and Na channels.
- Biological model structure The information storage unit 101 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.
- variable information storage unit 102 stores variable information that is information related to biological variables. Variables include Na ions, K ions, membrane potential, and so on.
- the variable information includes, for example, a variable name and a value set for the variable.
- the variable information storage unit 102 is preferably a nonvolatile recording medium, but can also be realized by a volatile recording medium.
- the arithmetic expression storage unit 103 stores an arithmetic expression for simulating a biological function for each biological function.
- the arithmetic expression is mainly a differential equation.
- the arithmetic expression storage unit 103 normally stores at least one biological function expression information having a biological function identifier for identifying a biological function and one or more arithmetic expressions.
- the biological function identifier is, for example, “molecular function”.
- An arithmetic expression is an expression for obtaining the function of a molecule in a living body. Such an arithmetic expression is usually an expression clarified by the development of research in the field of medical biology.
- the arithmetic expression storage unit 103 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.
- the hierarchical structure configuration unit 104 configures a hierarchical structure of two or more biological parts on the memory based on the biological model structure information stored in the biological model structure information storage unit 101.
- the biological model structure information defines the hierarchical structure of the biological parts
- the hierarchical structure configuration unit 104 configures the hierarchical relationship of the biological parts on the memory based on the biological model structure information. More specifically, the hierarchical structure forming unit 104 performs processing for securing a pointer area memory for a link that connects the parent and child biological parts, for example.
- the hierarchical structure forming unit 104 can be usually realized by an MPU, a memory, or the like.
- the processing procedure of the hierarchical structure forming unit 104 is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (a dedicated circuit).
- the execution unit 105 executes, for one or more biological parts having a hierarchical structure, one or more arithmetic expressions corresponding to the biological functions realized by the biological parts. Normally, a biological part has a biological function identifier as its attribute value. The execution unit 105 acquires an arithmetic expression corresponding to the biological function identifier from the arithmetic expression storage unit 103. Then, the execution unit 105 executes the acquired arithmetic expression.
- the output unit 106 outputs an analysis result based on the result executed by the execution unit 105.
- the analysis result may be a result obtained by the execution unit 105 executing the arithmetic expression, or a result of the execution of the arithmetic expression (good or bad health, etc.). Further, the output form of the analysis result is not limited. Output is a concept that includes display on a display, printing on a printer, sound output, transmission to an external device, and so on.
- the receiving unit 107 receives biological function expression information having a biological function identifier for identifying a biological function and one or more arithmetic expressions. Any input means for biometric expression information may be used, such as a numeric keypad, keyboard, mouse, or menu screen.
- the accepting unit 107 can be realized by a device driver of an input means such as a numeric keypad or a keyboard, or control software for a menu screen.
- the accepting unit 107 may accept biological model structure information.
- the accumulation unit 108 accumulates the biometric expression information received by the reception unit 107 in the calculation expression storage unit 103.
- the storage unit 108 can usually be realized by an MPU, a memory, or the like.
- the processing procedure of the storage unit 108 is usually realized by software, and the software is recorded on a recording medium such as a ROM. However, it may be realized by hardware (dedicated circuit).
- the storage unit 108 may store the biological model structure information received by the receiving unit 107 in the biological model structure information storage unit 101.
- the state acquisition unit 1061 acquires the state of the biological part after the execution unit 105 executes the arithmetic expression.
- the state of the biological part is a value of a variable that the biological part has.
- the output unit 1062 outputs an analysis result based on the state acquired by the state acquisition unit 1061.
- the output mode is not limited.
- the output means 1062 outputs a change in membrane potential as a graph.
- the output means 1062 outputs a change in potassium ion concentration as a numerical value. Further, the output means 1062 visually outputs the motion of the heart. Note that output is a concept that includes display on a display, printing on a printer, sound output, transmission to an external device, and the like.
- Step S1101 The hierarchical structure forming unit 104 reads the biological model structure information stored in the biological model structure information storage unit 101.
- Step S1102 The hierarchical structure forming unit 104 reads the biological model read in Step S1101.
- the structure information is interpreted, and the hierarchical structure of the biological parts is constructed based on the biological model structure information. Data having such a hierarchical structure is placed on a memory. The process for constructing the hierarchical structure of biological parts will be described in detail with reference to the flowchart of FIG.
- Step S1103 The number of biological parts is substituted for counter i, and 1 is substituted for counter j.
- the number of biological parts can be acquired when the biological model structure information is interpreted in step S1102.
- Step S1104 The j-th biological part is processed.
- the processing of the biological part is to execute an arithmetic expression for performing a simulation of the biological function corresponding to the biological function identifier that is an attribute value of the biological part on the biological part.
- Biological functions are simulated by powerful biocomponent processing. Details of the processing of the biological part will be described with reference to the flowchart of FIG. Note that biological parts that do not have an arithmetic expression are not subject to intensive processing.
- Step S 1105 The output unit 106 outputs the processing result of the j-th biological part. Such output provides a simulation result of the biological function. At the time of such output, the state acquisition unit 1061 acquires the state of the biological part, and the output unit 1062 outputs the analysis result based on the state.
- Step S 1106 Execution unit 105 determines whether or not it is the power to end the process. If not, go to step S1107. Whether or not to end the process may be determined by whether or not the force is a predetermined number of j, or may be determined by detecting that the force has passed a predetermined time after starting the simulation. It may be determined by detecting that an end instruction has been accepted. In addition, the termination trigger does not matter.
- Step S1107 The execution unit 105 determines whether i and j are equal. If i and j are equal, go to step S1108, and if i and j are not equal, jump to step S1109.
- Step S1108 The execution unit 105 substitutes 1 for j.
- the process returns to step S1104.
- Step S1109 The execution unit 105 increments j by 1. The process returns to step S1104.
- Step S1201 The hierarchical structure forming unit 104 assigns 1 to the counter i.
- Step S1202 The hierarchical structure forming unit 104 determines whether or not the definition of the i-th row of the biological model structure information (in this case, for example, a file) is the definition of the biological part information. I refuse. If it is the definition of the information on the biological part, the process goes to Step S1203, and if it is not the definition of the information on the biological part, the process jumps to Step S1208. If the definition of the i-th line is not the definition of the information on the bio-part, another process corresponding to the definition may be performed.
- the definition of the i-th row of the biological model structure information in this case, for example, a file
- the hierarchical structure forming unit 104 acquires biological part information that is information about the biological part in the definition of the i-th row.
- the biological part information is, for example, the name of the biological part, a biological function identifier that identifies the function of the biological part, and the like. Further, the biological part information is, for example, the value of a variable when the biological part is a variable.
- Step S1204 The hierarchical structure forming unit 104 sets the biological part information acquired in step S1203.
- the setting of the biological part information is to write the biological part information on the memory.
- Step S 1205 Hierarchical structure forming section 104 determines whether or not a parent biological part exists in the biological part corresponding to the i-th row. If the parent biological part exists, the process goes to step S 1206, and if the parent biological part does not exist, the process jumps to step S 1208.
- the hierarchical structure forming unit 104 secures an area for setting a parent-child relationship (which may be a link area or an array area) in the memory.
- Step S 1207 Hierarchical structure forming unit 104 sets a parent-child relationship of biological parts. Specifically, the hierarchical structure forming unit 104 writes, for example, the address on the memory in which the parent biological part is defined in the memory secured in step S1206. This address write process sets a link that defines the parent-child relationship.
- Step S1208 The hierarchical structure forming unit 104 determines whether or not the force has been reached for the processing of all the rows of the biological model structure information. If not completed, go to Step S1209. If completed, return to upper function.
- Step S1209 The hierarchical structure forming unit 104 increments the counter i by 1. Return to step S1202.
- FIG. 13 is a flowchart for explaining details of the processing of the biological part.
- the execution unit 105 acquires a biological function identifier that is an attribute value of the biological part.
- Step S1302 The execution unit 105 assigns 1 to the counter i.
- Step S1303 The execution unit 105 determines whether or not there is a force that has a square arithmetic expression among the arithmetic expressions corresponding to the biological function identifier acquired in Step S1301. If the i th arithmetic expression exists, the process goes to step S1304. If the i th arithmetic expression does not exist, the process returns to the upper function.
- Step S1304 The execution unit 105 executes the i-th arithmetic expression for the living body part.
- Step S1305) The execution unit 105 increments the counter i by 1.
- FIG. 5 is data showing an example of biological model structure information.
- FIG. 14 is an arithmetic expression management table stored in the arithmetic expression storage unit 103.
- the arithmetic expression management table has one or more pieces of biometric expression information as a record.
- the biometric expression information has a biofunction identifier and one or more arithmetic expressions.
- the living body simulation apparatus starts the simulation in an energetic situation.
- the trigger for starting the simulation may be an instruction from the user or an instruction from an external device.
- the biological simulation apparatus reads the biological model structure information of FIG.
- the biological simulation apparatus interprets biological model structure information.
- the biological simulation apparatus obtains a hierarchical structure of biological parts shown in FIG.
- the biological simulation apparatus processes the four biological parts “extracellular fluid”, “cell”, “Na channel”, and “K channel”.
- the processing order is, for example, from biological parts that are deep in the hierarchy. That is, the biological simulation apparatus processes biological parts in the order of “Na channel”, “K channel”, “cell”, and “extracellular fluid”. In this way, processing from the depth V and biological parts in the hierarchical structure is convenient for expressing the entire behavior as a set of behaviors of individual functional elements.
- the biological part processing This is to execute all the arithmetic expressions that are paired with the biological function identifier that is the attribute value of the biological part.
- FIG. 8 shows the value of “Vm” (membrane potential) possessed by the instance “cell”.
- the biological simulation apparatus in the present embodiment can be configured based on the object orientation in the first embodiment.
- the variable information storage unit 102 corresponds to the node class of the first embodiment
- the arithmetic expression storage unit 103 includes the reaction class
- the hierarchical structure configuration unit 104 corresponds to the hierarchical structure class
- the output unit 106 corresponds to the analysis class.
- the output example of the biological simulation apparatus is not limited to a single graph, but may be an output as shown in FIG. 15, for example.
- the software that realizes the biological simulation apparatus in the present embodiment is the following program.
- this program stores, in a computer, biological model structure information having two or more biological parts that are parts constituting the living body and information indicating the hierarchical structure of the living body parts. Some variable information is stored, and an arithmetic expression for simulating a biological function is stored for each biological function. Based on the stored biological model structure information, the two or more biological parts are stored in the memory.
- a hierarchical structure configuration step that configures a hierarchical structure of the above, and an execution step that executes, on one or more biological parts that configure the hierarchical structure, one or more arithmetic expressions corresponding to biological functions realized by the biological parts;
- the output step is based on a state acquisition substep of acquiring a state of the biological part after executing the arithmetic expression in the execution step, and the state.
- a sub-step for outputting the analysis result may be provided!
- a reception step of receiving a biological function identifier for identifying a biological function and biological calculation formula information having one or more calculation formulas in the computer, and the biological calculation formula information received in the reception step This is a program for further executing an accumulation step for accumulating.
- the computer that executes the program described in this specification may be a single computer or a plurality of computers. In other words, centralized processing or distributed processing may be performed.
- each processing may be realized by centralized processing by a single device (system) or a plurality of devices. It may be realized by being distributed by.
- the living body simulation apparatus has an effect that a new living body function can be easily incorporated, and is useful as a living body simulation apparatus.
- FIG. 1 Basic class hierarchy diagram of biological simulation apparatus of embodiment 1
- FIG. 2 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 3 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 4 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 5 is a diagram showing an example of the same-body model structure information
- FIG. 8 is a diagram showing an output example of the living body simulation apparatus
- FIG. 10 is a block diagram of the biological simulation apparatus in the second embodiment.
- FIG. 11 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 12 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 13 is a flowchart for explaining the operation of the living body simulation apparatus.
- FIG. 15 is a diagram showing an output example of the living body simulation apparatus
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004279178A JP2007334377A (ja) | 2004-09-27 | 2004-09-27 | 生体シミュレーション装置およびプログラム |
| JP2004-279178 | 2004-09-27 |
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| WO2006035618A1 true WO2006035618A1 (ja) | 2006-04-06 |
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| PCT/JP2005/017116 Ceased WO2006035618A1 (ja) | 2004-09-27 | 2005-09-16 | 生体シミュレーション装置およびプログラム |
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| WO (1) | WO2006035618A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095623A (zh) * | 2014-05-13 | 2015-11-25 | 中国人民解放军总医院 | 疾病生物标志物的筛选分析方法、平台、服务器及系统 |
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| JP5274002B2 (ja) * | 2007-12-18 | 2013-08-28 | 株式会社アクション・リサーチ | 人工生命シミュレーション装置及び方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11509655A (ja) * | 1995-04-14 | 1999-08-24 | メディカル・サイエンス・システムズ,インコーポレイテッド | 階層型生物モデリングシステム及び方法 |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11509655A (ja) * | 1995-04-14 | 1999-08-24 | メディカル・サイエンス・システムズ,インコーポレイテッド | 階層型生物モデリングシステム及び方法 |
Non-Patent Citations (3)
| Title |
|---|
| SARAI NOBUAKI.: "Seibutsugateki Shiten ni Motozuku Object Shiko Seitai Kino Simulation.", JOURNAL OF THE JAPAN SOCIETY OF SIMULATION TECHNOLOGY., vol. 23, no. 1, 15 March 2004 (2004-03-15), pages 4 - 13, XP002996893 * |
| SARAI NOBUAKI.: "simBio: Seibutsugakuteki Dynamic Model Kaihatsu Kiban.", BME., vol. 18, no. 2, 10 April 2004 (2004-04-10), pages 3 - 11, XP002996894 * |
| SHIBAYAMA TSUKASA.: "Object Shiko ni Motozuita Seitai Kino Simulation Model Kochiku Kankyo. (Biological Simulation Environment Based on Object Oriented paradigm)", IEICE TECHNICAL REPORT., vol. 103, no. 81, 16 May 2003 (2003-05-16), pages 23 - 28, XP002997689 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095623A (zh) * | 2014-05-13 | 2015-11-25 | 中国人民解放军总医院 | 疾病生物标志物的筛选分析方法、平台、服务器及系统 |
| CN105095623B (zh) * | 2014-05-13 | 2017-11-17 | 中国人民解放军总医院 | 疾病生物标志物的筛选分析方法、平台、服务器及系统 |
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| JP2007334377A (ja) | 2007-12-27 |
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