CN115166250A - Use of T cells as biomarkers for monitoring or predicting the efficacy of anti-HBV treatment or predicting the risk of relapse - Google Patents

Use of T cells as biomarkers for monitoring or predicting the efficacy of anti-HBV treatment or predicting the risk of relapse Download PDF

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CN115166250A
CN115166250A CN202210842043.9A CN202210842043A CN115166250A CN 115166250 A CN115166250 A CN 115166250A CN 202210842043 A CN202210842043 A CN 202210842043A CN 115166250 A CN115166250 A CN 115166250A
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付豪
秦波
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Abstract

The invention discloses the use of T cells as biomarkers in the preparation of products for monitoring or predicting the efficacy of anti-HBV therapy, said T cells including Treg cells, CD4+ T cells, CD8+ T cells; also disclosed is the use of T cells as biomarkers for the preparation of a product for predicting the risk of recurrence after clinical functional healing in anti-HBV therapy, said T cells comprising CD8+ subset CXCR5+ CD8+ T cells and CD4+ subset CXCR5+ CD4+ T cells. The invention can be applied to guide chronic hepatitis B interferon antiviral treatment, provides a new immune target for exploring chronic hepatitis B antiviral treatment, improves the cure rate and reduces the recurrence rate.

Description

Use of T cells as biomarkers for monitoring or predicting the efficacy of anti-HBV treatment or predicting the risk of relapse
Technical Field
The invention relates to the technical field of biomedicine, in particular to application of T cells as biomarkers in monitoring or predicting the curative effect of anti-HBV treatment or predicting the risk of relapse.
Background
Chronic Hepatitis B (CHB) is a type of infectious disease caused by Hepatitis B Virus (HBV) that seriously jeopardizes public life safety. The treatment of chronic hepatitis B aims to reduce the occurrence of cirrhosis, liver failure and HCC, improve the life quality of patients and prolong the survival time. The actual functional cure is the aim currently pursued by medical workers, and the functional cure is different from inactive HBV carriers after drug withdrawal, namely HBsAg negative conversion, anti-HBs negative or positive, HBeAg negative, serum HBVDNA is lower than the lower detection limit, and the risk of HCC is reduced along with time; the distinction from "complete cure" is that the intrahepatic cccDNA is still in a detectable state but inactive. The first-line medicine polyethylene glycol interferon (Peg-IFN) for clinical cure has a direct antiviral and immunoregulation dual-action mechanism, can obviously improve the HBsAg loss rate of patients with chronic hepatitis B, can block the formation of core particles in the antiviral action, regulates and controls cccDNA epigenetics, and ISGs-mediated antiviral defense in infected cells and non-infected cells, thereby achieving the purposes of reducing HBVDNA and reducing the expression of HBV antigens (HBsAg, HBcAg and HBeAg); in the action of immune regulation, the TRAIL expression of NK cells can be increased, CD56brihgt NK cells are activated, CD8+ T cell response is increased slightly and CD4+ T cell response is regulated, so that the generation of IFN-gamma for direct antivirus is enhanced, T cell response is promoted, and finally the effect of clinical cure is achieved. While the study by WuD et al suggests that: the antiviral immunity efficacy of the reshaped organism is the future of patients with chronic hepatitis B by combining multi-target intervention of immunoregulation on the basis of continuous virus control. In recent years, more and more attention is paid to researchers in immunoregulation research. XiaY et al believe that T cell-produced IFN- γ and TNF- α can reduce HBVcccDNA by inducing deamination and subsequent cccDNA decay; wang et al believe that the interaction mechanism of Foxp3 (a surface marker for Tregs) and IL-17/IL-23 may become a new point of breakthrough for HBV clearance, and that Foxp3 is positively associated with HBVDNA and HBsAg.
While in CHB, CXCL13 and IL-21 axis activation have a significant correlation with the occurrence of functional healing. Shen Z et al have demonstrated through animal models that IL-21 and IL-33 are closely associated with the clearance of HBV. The C-X-C chemokine receptor5 (CXCR 5) and the homologous receptor CXCL13 are members of CXC subtype in chemokine superfamily, can chemotactic mature B cells and T follicular helper cells to migrate to B cell follicles and growth centers and secrete memory B cells and plasma cells. The subgroup of CD8+ T cells CXCR5+ CD8+ T cell follicular cytotoxic T cells play an important role in controlling chronic viral infections. The research of the group of the Red teaching questions found that: the proportion of gamma delta T cells is positively correlated with HBV replication and negatively correlated with the inflammation degree of the liver, and the lower the proportion of the effector memory subgroup is, the better the curative effect of Peg-IFN alpha-2 a on the CHB combined with TDF is.
In conclusion, a plurality of researches prove to the people that the importance of enhancing the host immune function in the combination of Peg-IFN and TDF anti-HBV treatment is one of the key factors for improving the clinical cure rate of chronic hepatitis B. However, after clinical functional cure is achieved, about 9.6% of patients have recurrence, i.e. positive HBsAg or positive HBV-DNA. Therefore, the research on the difference between relapse and non-relapse has important significance for guiding chronic hepatitis B interferon antiviral treatment, providing a new immune target for exploring chronic hepatitis B antiviral treatment, improving the cure rate and reducing the relapse rate.
Disclosure of Invention
One of the objects of the present invention is to provide the use of T cells including Treg cells, CD4+ T cells, CD8+ T cells as biomarkers for the preparation of a product for monitoring or predicting the efficacy of anti-HBV therapy.
In the above technical scheme, the changes of the CD4+ T cell content, treg cell content and CD4/CD8 ratio are used to predict or monitor the efficacy of anti-HBV treatment; compared with a reference, the content of CD4+ T cells of the subject is remarkably reduced, the CD4/CD8 ratio shows a remarkably reduced trend, the content of Treg cells is remarkably reduced, and the medicine has a curative effect, and vice versa; preferably, the reference is the normal population and/or the cell content of the subject prior to administration.
It is another object of the invention to provide the use of T cells comprising CD8+ subgroup CXCR5+ CD8+ T cells and CD4+ subgroup CXCR5+ CD4+ T cells as a biomarker for the manufacture of a product for predicting the risk of relapse after reaching a clinically functional cure in anti-HBV therapy.
In the above-described protocol, a significant decrease in CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in the subject, as compared to the reference in the non-relapsed group, is indicative of a high risk of HBsAg relapse, whereas a high level of occupancy in T cells by CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells is indicative of no or low risk of relapse.
It is a further object of the present invention to provide the use of an agent for detecting the amount of Treg cells, CD4+ T cells, CD8+ T cells in the manufacture of a product for monitoring or predicting the efficacy of an anti-HBV treatment.
In the technical scheme, the change of the content of CD4+ T cells, the content of Treg cells and the ratio of CD4/CD8 is used for predicting or monitoring the curative effect of anti-HBV treatment; compared with the reference, the content of CD4+ T cells of the subject is obviously reduced, the CD4/CD8 ratio shows a trend of obviously reducing, the content of Treg cells is obviously reduced, and the medicine has the curative effect, and vice versa.
Still another object of the present invention is to provide the use of a substance for detecting the amount of CD8+ subgroup CXCR5+ CD8+ T cells and CD4+ subgroup CXCR5+ CD4+ T cells in the manufacture of a product for predicting the risk of recurrence after clinical functional cure in anti-HBV treatment.
In the above-described protocol, a significant decrease in CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in the subject, as compared to the reference in the non-relapsed group, is indicative of a high risk of HBsAg relapse, whereas a high level of occupancy in T cells by CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells is indicative of no or low risk of relapse.
In the above application technical scheme, the T cell refers to a T cell in peripheral blood; the anti-HBV treatment is Peg-IFN treatment, preferably combination treatment of Peg-IFN and tenofovir.
The substance is selected from antibody and chip.
The beneficial effects of the invention are:
according to the invention, after the Peg-IFN alpha and TDF are combined to treat chronic hepatitis B to achieve clinical functional cure, the influence of various immune cell functions on clinical relapse and the difference between relapse and non-relapse are analyzed, and the expression conditions of various immune cells in a whole blood sample after interferon treatment achieves functional cure are observed. Through the research results, the chronic hepatitis B interferon antiviral treatment is guided, a new immune target is provided for exploring chronic hepatitis B antiviral treatment, the cure rate is improved, and the recurrence rate is reduced.
According to research, the invention discovers that the distribution situation and dynamic change of peripheral blood T lymphocytes after the Peg-IFN combined TDF is clinically cured can be obviously seen through experimental results and clinical data analysis, wherein the total proportion of CD4+ T cells and Treg cells is in a descending trend, the total proportion of CD8+ T cells is not obviously changed, and the change of the CD4+ T cells, the Treg cells and the CD4/CD8 ratio can be used for monitoring and predicting the curative effect of the Peg-IFN alpha-2 b combined tenofovir in anti-HBV treatment; CXCR5 plays an important role in clinical healing and relapse after Peg-IFN and tenofovir are combined in anti-HBV treatment, the total occupation ratio of Tfh and Tfc is higher in both the Cure group and the Re group, and the total occupation ratio of the Tfh and the Tfc is lower in both the CL group and the HC group, so that when surface antigen clearance is achieved, both Tfh and Tfc are maintained at a higher concentration, and the rapid decline of the Tfh and the Tfc is probably used for indicating HBsAg reviving, and the occupation ratio is maintained to be high, so that HBsAg clearance is facilitated and clinical functional healing is achieved.
Drawings
Figure 1 is a graph of flow analysis of CD3, CD4, CD8 and Treg cells in PBMCs.
FIG. 2 shows the distribution of CD4+ T cells in each group.
FIG. 3 is the distribution of CD8+ T cells in each group.
FIG. 4 is the distribution of the ratio of CD4+ T cells to CD8+ T cells in each group.
Figure 5 is the distribution of Treg cells in each group.
Fig. 6 is a flow analysis diagram of Tfh cells and Tfc cells in PMBC.
Figure 7 is the distribution of CXCR5+ CD4+ T cells among the groups.
Figure 8 is the distribution of CXCR5+ CD8+ T cells among the groups.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to be limiting.
The experimental methods in the following examples are all conventional methods unless otherwise specified; the reagents used are, unless otherwise specified, conventional in the art and are commercially available.
Example 1
1 materials and methods
1.1 study subjects
As subjects, 35 CHB patients were included who were admitted to the department of the college of chongqing medicine from 2019.10 to 2021.10.
Inclusion criteria were: (1) adult (age > 18 years) patients with chronic hepatitis B, but less than 60 years of age; (2) agree to treatment with Peg-IFN α -2b in combination with Tenofovir (TDF) and can adhere to an out-patient follow-up; (3) the study and treatment risks were known and informed consent was signed.
Exclusion criteria: (1) combined with other viral infections, such as hepatitis A, hepatitis C, hepatitis E, HIV infection, etc.; (2) contraindications for IFN therapy: such as severe infection, schizophrenia, severe end-stage liver disease, pregnant women, etc.; (3) combined with severe chronic diseases, such as coronary heart disease, alcoholic liver disease, end-stage renal disease, severe lupus erythematosus and the like; (4) some severe adverse reactions occurred with Peg-IFN α -2b in combination with TDF.
Stopping the medicine standard: normal liver function; HBsAg is less than 0.04IU/mL (can not be detected); HBV DNA is less than 100IU/mL.
Recording personal information and clinical information of the patients who enter the group, wherein the personal information and the clinical information comprise age, sex, treatment period and the like; the follow-up condition of the patient during the treatment period comprises indexes of blood routine, liver function, hepatitis B, HBV DNA content, AFP and the like. The study has been approved by the ethical committee of the first hospital affiliated with the university of Chongqing medical sciences (2020-409).
1.2 Experimental reagents and instruments
1.2.1 Main Experimental reagents
Figure BDA0003750683790000041
Figure BDA0003750683790000051
1.2.2 Main laboratory instruments and Equipment
Figure BDA0003750683790000052
1.3 Experimental methods
1.3.1 specimen Collection
Peripheral blood of 10ml was collected from healthy volunteers and patients enrolled in the study at an outpatient clinic and collected using vacuum blood collection tubes. And specimen processing was performed within two hours.
1.3.2PBMC extraction
(1) 1200r/min 10min centrifugal blood sample
(2) Aspirate 1ml serum into a 1.5ml EP tube
(3) Adding the residual plasma into a 15ml centrifuge tube containing 4ml of PBS, and mixing uniformly
(4) Slowly add 4ml of the solution (45 ℃ inclined slow add)
(5) Placing into centrifuge 400G 40min, slowly ascending and slowly descending
(6) The serum is put into a centrifuge 12000r 10min for centrifugation and then sucked into a new EP tube
(7) Sucking the suspended PBMC in the centrifuge tube by capillary tube
(8) Putting into a centrifuge for 300G 8min for centrifugation
(9) Sucking out the upper liquid
(10) Cell counting
(11) Centrifuging in a centrifuge at 300G 5min
(12) Sucking out the supernatant liquid
(13) Adding RPMI1640 (800 ul or 1.2 ml) into the centrifuge tube
(14) Slowly dropwise adding equivalent cell freezing solution
(15) Mixing, separating to 1.5ml freezing tube (2 tube or three tubes)
(16) After gradient freezing, putting the freezing tube into liquid nitrogen for preservation
1.3.3 cell Resuscitation
(1) Preparation of RPMI1640+10% FBS about 5ml as the culture Medium
(2) Taking the PBMC out of the liquid nitrogen tank, putting the PBMC into a water bath kettle at 37 ℃, and transferring the PBMC into a culture medium when ice cubes are dissolved almost;
(3) Centrifuging: 300g,5min, room temperature, discarding the supernatant;
(4) Counting with PBS, sucking 20ul PBMC, placing into a cell counter, and ensuring the number not less than 2 × 10 under a mirror 6
(5) Centrifuging: 300g,5min, room temperature, discard the supernatant and divide them into three tubes 50. Mu.l. Times.3 tubes, tube1 blank tube, tube2 sample tube, tube3 isotype control.
1.3.4 flow cytometry analysis of Peripheral Blood Mononuclear Cells (PBMC)
(1) Fc blocking: adding 2.5 μ l of blocking agent into 50 μ l of cell system, keeping away from light for 8min, and washing-free;
(2) Antibodies were added to each tube:
tube1 (blank): is free of
Tube2 (sample Tube):
PE MouseAnti-Human CD3:0.5μl
FITC MouseAnti-Human CD8:2μl
PerCP-Cy5.5 MouseAnti-Human CD4:1μl
BV650 MouseAnti-Human CD25:1μl
BV421 Rat Anti-Human CXCR5(CD185):0.5μl
Alexa
Figure BDA0003750683790000071
647Mouse Anti-Human CD127:2μl
tube3 (isotype control):
PE Mouse Anti-Human CD3:0.5μl
FITC Mouse Anti-Human CD8:2μl
PerCP-Cy5.5 Mouse Anti-Human CD4:1μl
BV650 Mouse IgG1,κIsotype Control:0.5μl
Alexa
Figure BDA0003750683790000072
647Mouse IgG1,κIsotype Control:0.5μl
BV421 Mouse IgG2b,κIsotype Control:0.5ul
(3) After adding 1ml PBS, the mixture is kept still for 20min in dark.
(4) Centrifuging: 300g,5min, room temperature, discarding the supernatant;
(5) Adding 400ul PBS again, 300g at room temperature, and centrifuging for 5min for re-suspension;
(6) Moving into a flow tube through a filter membrane;
(7) Preparing a single male pipe: using a BD TM CompBeads Anti-Mouse Ig, kappa and BD TM CompBeads
The Negative Control 1 was mixed into 6 tubes, 50ul each, and added to PE Mouseanti-Human CD3, FITC Mouseanti-Human CD8, perCP-Cy5.5 Mouseanti-Human CD4, BV650 Mouse IgG1,. Kappa.Isotype Control, alexa
Figure BDA0003750683790000073
647Mouse IgG1,. Kappa.Isotype Control,. BV421 Mouse IgG2b,. Kappa.Isotype Control.
(6) Repeating the operations in (3) and (6);
(7) Debugging the instrument and detecting on the computer.
(8) Data analysis was performed by FlowJo.
1.4 statistical analysis
Mapping and analysis were performed using GraphPadPrism 8.0. In the measurement data, adopting t test to meet the normality and the homogeneity of variance; the variance is irregular and a Welch's correction t test is adopted; the normality was not satisfied using the Mann-Whitney rank sum test. The counting data were examined precisely by Fisher's. When P is less than 0.05, the difference between groups has statistical significance.
2 results
2.1 the distribution and dynamic changes of T lymphocytes in peripheral blood after clinical cure are obvious by combining Peg-IFN with TDF to resist HBV
We performed some grouping of PBMCs: the health control group (HC, n = 10), the HBsAg Clearance group (clear group, CL, n = 10), the Cure group (Cure, n = 10), the relapse group (Recrudescence, RE, n = 15), the health control group is a sample of a Healthy population in which HBsAg is negative and HBsAb is positive, the HBsAg Clearance group is a sample of a patient who has reached HBsAg negative by the first detection after the therapy of Peg-IFN in combination with TDF, the Cure group is a sample of a patient in which HBsAg becomes negative and remains for half a year or more after the therapy of Peg-IFN in combination with TDF, and the relapse group is a sample of a patient in which HBsAg becomes negative after the therapy of Peg-IFN in combination with TDF and has returned to positive after the follow-up visit. Flow analysis was performed on CD3, CD4, CD8 and Treg cells in their PMBC (fig. 1).
2.1.1CD4+T cell distribution
The percentage of CD4+ T cells to T cells (abbreviated as CD4+ T total) was statistically significant between Re and HC, and between Re and CL, with HC higher than Re (P = 0.0029), CL higher than Re (P < 0.001), and the difference between Re and curr not statistically significant (P > 0.05), as shown in fig. 2.
2.1.2CD8T cell distribution
Percentage of CD8+ T cells to T cells (abbreviated as CD8+ T total) in flow analysis, the differences between Re and HC, re and Cure, and Re and CL were not statistically significant (P > 0.05), as shown in fig. 3.
Ratio of 2.1.3CD4+ T cells to CD8+ T cells
The ratio of CD4+ T cells to CD8+ T cells (abbreviated CD4/CD8 ratio) was statistically significant between the Re and CL groups, with the CL group being higher than the Re group (P = 0.010) and the differences between the Re and HC, re and Cure groups being statistically insignificant (P > 0.05), see fig. 4.
2.1.4Treg cell distribution
The proportion of Treg cells in T cells (abbreviated as Treg proportion) was statistically significant between the Re group and the CL group, the Re group and the HC group, the CL group was higher than the Re group (P = 0.003), the HC group was higher than the Re group (P = 0.03), and the difference between the Re group and the Cure group was not statistically significant (P > 0.05), as shown in fig. 5.
In conclusion, it can be found that the distribution of CD4+ and Treg cells of PBMC of peripheral blood after hepatitis B surface antigen clearance, clinical cure and relapse of patients treated with the combination of Peg-IFN alpha-2 b and TDF for CHB is obviously different. Similarly, the dynamic changes of the immune cells have a certain correlation with the curative effect of the Peg-IFN alpha-2 b, wherein the change of the CD4+ T cells is most obvious, and the CD4+ T cells all show a descending trend from the hepatitis B surface antigen clearance period to clinical cure or relapse, compared with the non-obvious change trend of the CD8+ T cells; the CD4/CD8 ratio is different between the CL group and the Re group and between the CL group and the Cure group, the CD4/CD8 ratio from the CL stage to the Re stage shows a descending trend, and the CD4/CD8 ratio from the CL stage to the Cure stage is not obviously different. Changes in CD4+ T cells, treg cells and CD4/CD8 ratio can be used to predict or monitor the efficacy of Peg-IFN α -2b in combination with TDF.
2.2CXCR5 plays an important role in the process of relapse after the clinical cure by the combination of Peg-IFN alpha-2 b and TDF anti-HBV treatment
Similarly, we performed flow analysis of two subsets of CXCR5 follicular helper T cells (CXCR 5+ CD4+ T cells) and follicular cytotoxic T cells (CXCR 5+ CD8+ T cells) (fig. 6) to investigate the differences between HBsAg Cleared (CL), cured (Cure), relapsed (Re) and Healthy Control (HC).
2.2.1CXCR5+ CD4+ T cell distribution
The proportion of CXCR5+ CD4+ T in T cells (abbreviated as TFH proportion) was statistically different between the Re group and the CL group (P < 0.001), the Re group and the HC group, and the Re group and the Cure group, with the CL group higher than the Re group (P = 0.0097), the HC group higher than the Re group (P = 0.031), as shown in fig. 7.
2.2.2CXCR5+ CD8+ T cell distribution
The ratio of CXCR5+ CD8+ T in T cells (abbreviated as TFC ratio) was statistically different between Re and CL groups, higher than Re (P = 0.0006), HC higher than Re (P = 0.0021), and Re higher than Re (P = 0.023), as well as between Re and Cure, as shown in fig. 8.
Flow experiment results show that the distribution of TFH cells and TFC cells of patients treated by Peg-IFN alpha-2 b and TDF with CHB is obviously different after hepatitis B surface antigen clearance, clinical cure and relapse. During the period from hepatitis B surface antigen clearance to clinical cure or relapse, both TFH cells and TFC cells present a descending trend, during the initial stage of hepatitis B surface antigen clearance, TFH cells and TFC cells of peripheral blood of a patient are in a high-expression state higher than that of a healthy group, and after the patient achieves functional cure along with the advancement of treatment process, both Tfh cells and Tfc cells present a descending trend lower than that of the healthy group, while in a relapse group, tfh cells and Tfc cells of the patient present an expression trend lower than that of the cure group, so that the depletion of the Tfh cells and the Tfc cells is closely related to the curative effect of Peg-IFN alpha-2 b combined TDF, and the anti-HBV curative effect of Peg-IFN alpha-2 b combined treatment or new immune targets are predicted through the detection of such subcellular populations to reduce the relapse rate and improve the cure rate.
3 analysis and conclusion
Our study found that: while the overall proportion of CD4+ T cells in both the Cure and Re groups was lower than that in the HC and CL groups, our previous studies found that the overall proportion of CD4+ T cells in CHB patients was higher than that in the HC group and that of CD8+ T cells was lower than that in the HC group, and that T cell dysfunction and failure in the Cure and Re groups was restored compared to CHB patients by the CD4/CD8 ratio, CD8+ T cells are characterized by clearance of aberrant factors or resistance to invasion by foreign factors through massive expansion and differentiation into cytotoxic effector cells. Depletion of CD8+ T cells is associated with a progressive impairment of their function, especially in terms of expansion capacity, secretion of cytokines and elimination of antigens. We have collected clinical data showing that both the HBV-DNA of the Cure group and the Re group are below the lower detection limit compared to CHB patients, although the HBV-DNA of the Re group is increased with the lapse of time; in the distribution of Treg cells, the Re group is obviously lower than the HC group and the CL group, the Treg cells are a subgroup of CD4+ T cells, have the functions of immune negative regulation, can inhibit the auxiliary effect of the CD4+ T cells on the CD8+ T cells, and can nonspecifically inhibit the activation and proliferation of the CD4+ T cells and the CD8+ T cells by secreting suppressive cytokines. Treg cells are more active in the Re group than in the Cure group, which can reflect by negative feedback mechanism that clearance of the Re group for HBsAg is weaker than that of the Cure group. Therefore, for the curative effect of realizing whether the functional cure is relapsed, the Treg cells and the CD8+ T cells are good monitoring indexes, and meanwhile, the detection of other indexes such as HBV DNA, AST, ALT and the like also needs to be analyzed together, and the curative effect can be better predicted only by controlling the dynamic change of each index.
Two subsets, follicle helper T cells (Tfh, CXCR5+ CD4+ T cells), follicle cytotoxic T cells (Tfc, CXCR5+ CD8+ T cells), have received increasing attention and emphasis from experts in the treatment of CHB in recent years. Their marker surface molecule CXCR5 and its ligand CXCL13 have also been included in extensive research.
The concordant role of the Tfh cell subpopulation in humoral immunity for adaptive immune responses, as well as the accessory role of the production of various classes of antibodies, is the direction of our major research. Mature Tfh cells are located in follicles of Secondary Lymphoid Organs (SLOs), and differentiate into memory B cells and plasma cells by assisting activation of B cells located therein in the Germinal Center (GC) and generate corresponding mature antibodies. Moreover, tfh cells play very important roles and roles in cancer control, antimicrobial pathogen infection, and prevention of autoimmune hyperactivity as a reservoir for HIV. Of course, the Tfh cell subpopulation is no exception in anti-HBV. In the present study, it was found that the Tfh total occupancy was lower in both the Re and Cure groups than in the CL and HC groups, and that the Re group was also lower than the Cure group. This indicates that the Tfh total ratio is directly related to HBsAg clearance and has good immunological value for predicting the efficacy of treatment with Peg-IFN-alpha in combination with TDF.
CXCR5+ CD8+ T cells, a special CD8+ subset, are a subset of cells that have been discovered in recent years and are included in research. Im Se Jin et al performed detailed characteristic study on the cells of this subgroup at the transcriptome level, and found that the subgroup is an adaptive response to the exhausted PD-1+ CD8+ T cells. Has similar stem cell characteristics during chronic infection of chronic hepatitis B, namely self-renewal and differentiation into terminal CXCR5+ CD8+ T cells to exert antiviral efficacy. The transcription factor TCF1 is crucial for the generation of this subpopulation, whereas the blockade of PD-1 can cause a sharp expansion and differentiation of this subpopulation towards terminal stages. CXCR5+ CD8+ T cells play a key role in controlling viral replication, these CXCR5+ CD8+ T cells, which are affected by CXCL13 chemotaxis, migrate into B cell follicles have fewer inhibitory receptors and exhibit greater cytotoxicity than a subset of CXCR 5-; also shown is greater therapeutic potential in HIV. The research shows that TFC total ratio is lower than that of a CL group and a HC group in both Re and Cure groups, and that the Re group is also lower than that of the Cure group, so that TFC cells show better antiviral efficacy in the initial stage of CL, while in the Re group, HBsAg relapse occurs due to exhaustion of CD8+ T cells, while in the Cure group, tfc total ratio is higher than that of the Re group, so that Tfc plays a critical role in controlling replication of HBV viruses, and CXC5+ CD8+ T cells can serve as a breakthrough point for improving Cure rate and reducing relapse rate of anti-HBV treatment.
In conclusion, the invention can show that the distribution and dynamic change of peripheral blood T lymphocytes are obvious after the Peg-IFN and TDF are combined to achieve clinical cure by anti-HBV through experimental results and clinical data analysis, wherein the total proportion of CD4+ T cells and Treg cells is in a descending trend, the total proportion of CD8+ T cells is not obviously changed, and the change of the ratio of CD4+ T cells, treg cells and CD4/CD8 can be used for monitoring and predicting the curative effect of Peg-IFN alpha-2 b and tenofovir in anti-HBV treatment.
CXCR5 plays an important role in clinical healing and relapse processes after anti-HBV treatment is achieved through Peg-IFN alpha-2 b and tenofovir. The total occupancy of Tfh and Tfc is higher in both the Cure group and the Re group than in the CL and HC groups, so that Tfh and Tfc are maintained at a higher concentration when surface antigen clearance is achieved, and their rapid decline is likely to indicate a return to positive HBsAg, which is more favorable to clearance of HBsAg and to achieve a clinically functional Cure. CXCR5/CXCR13 is expected to become a new immune target for achieving functional cure.

Claims (10)

  1. Use of t cells as biomarkers for the manufacture of a product for monitoring or predicting the efficacy of anti-HBV therapy, characterized in that: the T cells comprise Treg cells, CD4+ T cells and CD8+ T cells.
  2. 2. Use according to claim 1, characterized in that: using the changes in CD4+ T cell content, treg cell content and CD4/CD8 ratio to predict or monitor the efficacy of anti-HBV treatment; compared with a reference, the content of CD4+ T cells of the subject is remarkably reduced, the CD4/CD8 ratio shows a remarkably reduced trend, the content of Treg cells is remarkably reduced, and the medicine has a curative effect, and vice versa; preferably, the reference is the normal population and/or the cell content of the subject prior to administration.
  3. Use of t cells as biomarkers for the preparation of a product for predicting risk of relapse after clinical functional cure achieved in anti-HBV therapy, characterized by: the T cells include CD8+ subset CXCR5+ CD8+ T cells and CD4+ subset CXCR5+ CD4+ T cells.
  4. 4. Use according to claim 3, characterized in that: a significant decrease in CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in the subject compared to the control of the non-relapsed group is indicative of a high risk of HBsAg relapse, whereas a high level of occupancy of CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in T cells is indicative of no or low risk of relapse.
  5. 5. Use of a substance that detects the amount of Treg cells, CD4+ T cells, CD8+ T cells in the manufacture of a product for monitoring or predicting the efficacy of an anti-HBV treatment.
  6. 6. Use according to claim 5, characterized in that: using the changes in CD4+ T cell content, treg cell content and CD4/CD8 ratio to predict or monitor the efficacy of anti-HBV treatment; compared with the reference, the content of CD4+ T cells of the subject is obviously reduced, the CD4/CD8 ratio shows a trend of obviously reducing, the content of Treg cells is obviously reduced, and the medicine has the curative effect, and vice versa.
  7. 7. Use of a substance that detects the amount of CD8+ subpopulations CXCR5+ CD8+ T cells and CD4+ subpopulations CXCR5+ CD4+ T cells in the manufacture of a product for predicting the risk of recurrence following clinical functional healing in anti-HBV treatment.
  8. 8. Use according to claim 7, characterized in that: a significant decrease in CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in the subject compared to the control of the non-relapsed group is indicative of a high risk of HBsAg relapse, whereas a high level of occupancy of CXCR5+ CD8+ T cells and CXCR5+ CD4+ T cells in T cells is indicative of no or low risk of relapse.
  9. 9. Use according to any one of claims 1 to 8, characterized in that: the T cells refer to T cells in peripheral blood; the anti-HBV treatment is Peg-IFN treatment, preferably combination treatment of Peg-IFN and tenofovir.
  10. 10. Use according to any one of claims 5 to 8, characterized in that: the substance is selected from antibody and chip.
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