KR102065180B1 - Lactobacillus sp. WiKim0092 having antibacterial activity against Clostridioides difficile and composition comprising the same - Google Patents

Abstract

The present invention relates to novel Lactobacillus sp. WiKim0092, and a composition comprising the same. Lactobacillus sp. WiKim0092 according to the present invention, as probiotics having antibacterial activity against harmful pathogens (Clostridioides difficile), can be used in various ways for the purpose of intestinal health, preventing and treating harmful pathogen-infectious diseases of humans or animals, and the like.

Description

Wikim0092 strain of the genus Lactobacillus having antimicrobial activity against Clostridioides difficile and a composition comprising the same {Lactobacillus sp. WiKim0092 having antibacterial activity against Clostridioides difficile and composition comprising the same}

The present invention relates to a novel Lactobacillus genus WiKim0092 strain and a composition comprising the same.

Clostridioides difficile) a Clostridium difficile Silesia (Clostridium difficile reclassified as) is the leading opportunistic infection among strains of diarrhea symptoms of gram-positive, anaerobic, spore produced by Bacillus, inpatient hospital to a long-term antibiotic therapy patients. The strain was first described as the cause of Clostridium difficile colitis (CDC) in 1978. The research on the natural production process and pathogenic mechanisms of Clostridioides difficile in association with antibiotics, mainly in the treatment of diarrhea in humans, has been progressing rapidly. Currently, about 5-25% of Clostridium difficile- associated disease (CDAD) in humans is associated with diarrhea associated with antibiotics and gastroenteritis, two syndromes that occur after the administration of antibiotics, mainly vancomycin and metronidazole. Known cause of occurrence. The cause of CDAD was caused by the use of antibiotics in the human intestine, disrupting the balance of normal flora and changing the distribution of flora in the intestine, resulting in overgrowth of Clostridioides difficile, which was inhibited by the flora. It is known to cause infection by enterotoxin) (Nonpatent Literature 1).

Pathogenic Clostriidides difficile can survive in vitro for long periods of time by forming spores after the discharge of Clostridiodes difficile in the diarrhea of infected patients. Due to these physiological characteristics, Clostridioides difficile can be contaminated with the environment for a long time, and from these contaminants, apo can cause additional infections through the oral cavity of a normal person, thereby causing the onset of Clostridioides difficile in the hospital. have.

On the other hand, Lactobacillus sp. Strains are known as probiotics that play a beneficial role in the human body, in particular, have a biological activity such as gastric intestinal immune enhancement. However, the antimicrobial activity of Clostridioides difficile of Lactobacillus strains is not known yet.

Sherris Medical Microbiology (4th), McGraw Hill, pp.322-324, 2004

The present invention is to provide a lactic acid bacteria of the genus Lactobacillus excellent antimicrobial activity.

Accordingly, the present inventors have tried to find a strain of lactic acid bacteria showing excellent antimicrobial effect against Clostridioides difficile as a probiotic, and as a result, a novel Lactobacillus sp. WiKim0092 ( Lactobacillus sp. WiKim0092) The present invention has been completed by separation and identification.

Lactobacillus sp. WiKim0092 ( Lactobacillus sp. WiKim0092) according to the present invention is a strain of the genus Lactobacillus derived from kimchi. Although the Lactobacillus genus WiKim0092 in the present invention was isolated and identified in kimchi, its access route is not limited thereto.

As a result of sequencing of 16S rRNA gene for identification and classification of microorganisms, which are excellent as probiotics separated through an embodiment of the present invention and exhibiting excellent antimicrobial effect against harmful pathogens, GenBank Accession No. It was shown to have a nucleic acid sequence of CP027190 to CP027193. In addition, as a result of the analysis, the microorganisms are Lactobacillus strains The highest molecular relationship was shown.

Therefore, the microorganism of the present invention having the nucleotide sequence of the 16S rRNA gene was named as Lactobacillus sp. CBA3605 ( Lactobacillus sp. In the present invention, Lactobacillus sp. CBA3605 ( Lactobacillus sp. CBA3605) can be used interchangeably with Lactobacillus sp. WiKim0092 ( Lactobacillus sp. WiKim0092). Genome sequence of the Lactobacillus sp. WiKim0092 genus Lactobacillus sp. WiKim0092 of the present invention is the organism name of CBA3605 ( Lactobacillus sp. CBA3605) Lactobacillus sp. GenBank Accession No. Published in NCBI through CP027190 to CP027193.

WiKim0092 of the genus Lactobacillus of the present invention is a gram-positive bacterium, a facultative anaerobe capable of growing in both aerobic and anaerobic conditions, and cells do not form spores.

Wikim0092 of the genus Lactobacillus of the present invention is a probiotic, having the general intestinal effect and the immune enhancing effect of lactic acid bacteria. It is well known that lactic acid bacteria of the genus Lactobacillus have a formal effect immune enhancing effect.

In the present invention, 'probiotics' is understood to mean a living microorganism that has a beneficial effect on the health of the host by improving the intestinal microbial environment of the host in the gastrointestinal tract of animals including humans. Probiotics are living microorganisms with probiotic activity that can have a beneficial effect on the intestinal flora of the host when fed in the form of dried cells or fermented products to humans or animals in the form of single or complex strains.

In the following examples, it was confirmed that the genus Lactobacillus WiKim0092 shows high antibacterial activity in the antibacterial test against harmful pathogens. In addition, the sequence analysis of WiKim0092 of the genus Lactobacillus revealed that the WiKim0092 had a bacteriocin carnocin CP52 gene and a lactococcin B (LCN-B) gene that was not reported in the genus Lactobacillus. Confirmed. Lactobacillus genus WiKim0092 according to the present invention can be used in various applications for the antibacterial of harmful pathogens as well as the use of suits, immune enhancing, etc. of human or animal as probiotics.

Thus, one embodiment of the present invention provides a composition comprising a genus of Lactobacillus WiKim0092 or a culture thereof.

The genus Lactobacillus WiKim0092 included in the composition according to the present invention may exist as live or dead microorganisms, and may also exist in a dried or lyophilized form. Forms and formulation methods of lactic acid bacteria suitable for inclusion in various compositions are well known to those skilled in the art.

In one embodiment, the composition may be a composition for oral administration comprising the strain WiKim0092 of the genus Lactobacillus present as live bacteria.

One embodiment of the present invention provides a formal formulation comprising Lactobacillus genus WiKim0092 or a culture thereof. The formal formulation according to the present invention can be used for the prevention, treatment and improvement of gastrointestinal diseases in animals including humans. Preferably, the animals include livestock such as cattle, horses and pigs. The gastrointestinal diseases include both bacterial infections and inflammatory bowel diseases, for example, infectious diarrhea caused by pathogenic microorganisms (E. coli, Salmonella, Clostridium, etc.), gastrointestinal inflammation, inflammatory bowel disease, neuro enteritis syndrome , Small intestine microbial hypergrowth, enterotropic diarrhea, and the like.

The formal formulation according to the invention is preferably administered orally. The dosage may vary depending on the type of gastrointestinal disease, the severity of the disease, age, sex, race, therapeutic or prophylactic purpose, etc., but in general, 10 to 100 billion animals may be administered per adult.

The present invention provides a composition for enhancing immunity comprising the genus Lactobacillus WiKim0092 or its culture. It is well known that lactic acid bacteria of the genus Lactobacillus have a formal effect and an immune enhancing effect.

The present invention also provides a composition for antibacterial comprising Lactobacillus genus WiKim0092, its culture or bacteriocin produced therefrom.

The antimicrobial composition according to the present invention is at least one harmful selected from the group consisting of Clostridioides difficile, Bacillus cereus, Streptococcus genus, E. coli, Pseudomonas aeruginosa, Staphylococcus aureus and Salmonella typhimurium It can exhibit antimicrobial activity against pathogens.

In one embodiment, the antimicrobial composition may have an antimicrobial activity against Clostridioides difficile. The Clostridioides difficile is a representative harmful pathogen that causes diarrhea, and produces diarrhea by producing intestinal toxin [toxin A], cytotoxin [toxin B] and binary toxin. And inflammatory reactions.

Accordingly, the present invention provides a composition for preventing, ameliorating or treating an infectious disease caused by a harmful pathogen comprising the genus Lactobacillus WiKim0092 or a culture thereof.

Lactobacillus genus WiKim0092 according to the present invention may be included in medicine, dietary supplements, food, feed, feed additives or lactobacillus starter due to this advantageous action.

Accordingly, the present invention provides a pharmaceutical composition for the prevention or treatment of infectious diseases caused by Clostridioides difficile including Lactobacillus genus WiKim0092 or a culture thereof as an active ingredient. In the present invention, the infectious disease may be diarrhea, toxic macrocolon, perforation, sepsis or gastric colitis, but is not limited thereto.

When the composition of the present invention is utilized as a pharmaceutical composition, the pharmaceutical composition of the present invention may be prepared using a pharmaceutically suitable and physiologically acceptable adjuvant in addition to the active ingredient, and as the adjuvant, excipient, boric acid Releases, sweeteners, binders, coatings, swelling agents, lubricants, lubricants, flavoring agents, and the like can be used.

The pharmaceutical composition may be preferably formulated into a pharmaceutical composition including one or more pharmaceutically acceptable carriers in addition to the above-described active ingredient for administration.

For example, for formulation in the form of tablets or capsules, the active ingredient may be combined with an oral, nontoxic, pharmaceutically acceptable inert carrier such as ethanol, glycerol, water and the like. In addition, if desired or necessary, suitable binders, lubricants, disintegrants and coloring agents may also be included in the mixture. Suitable binders include, but are not limited to, natural and synthetic gums, such as natural sugars such as starch, gelatin, glucose or beta-lactose, corn sweeteners, acacia, trackercans or sodium oleate, sodium stearate, magnesium stearate, sodium benzo 8, sodium acetate, sodium chloride, and the like. Disintegrants include, but are not limited to, starch, methylcellulose, agar, bentonite, xanthan gum and the like. Acceptable pharmaceutical carriers in compositions formulated in liquid solutions include sterile, sterile water, Ringer's solution, buffered saline, albumin injection solutions, dextrose solutions, maltodextrin solutions, glycerol, ethanol and One or more of these components may be mixed and used, and other conventional additives such as antioxidants, buffers and bacteriostatic agents may be added as necessary. In addition, diluents, dispersants, surfactants, binders and lubricants may be additionally added to formulate injectable formulations, pills, capsules, granules or tablets such as aqueous solutions, suspensions, emulsions and the like.

Furthermore, the method disclosed in Remington's Pharmaceutical Science, Mack Publishing Company, Easton PA can be formulated according to each disease or component, as appropriate in the art.

In addition, the present invention provides a food composition for preventing or ameliorating an infectious disease caused by Clostridioides difficile including Lactobacillus genus WiKim0092 or a culture thereof as an active ingredient.

When the composition of the present invention is utilized as a food composition, the food composition may include the form of health food or beverages, bars and the like. In addition, the food composition containing the strain as an active ingredient may comprise a beverage, such as fermented milk. Accordingly, the present invention provides a lactobacillus starter for fermentation consisting of Lactobacillus genus WiKim0092 or its culture.

The food composition according to the present invention may be formulated in the same manner as the pharmaceutical composition, used as a functional food, or added to various foods. Examples of the food to which the composition of the present invention can be added include beverages, vitamin complexes, and health supplements.

The food composition of the present invention may include ingredients conventionally added in the manufacture of food, and include, for example, proteins, carbohydrates, fats, nutrients, seasonings and flavoring agents. Examples of the above carbohydrates include monosaccharides such as glucose, fructose and the like; Disaccharides such as maltose, sucrose, oligosaccharides and the like; And sugars such as conventional sugars such as polysaccharides such as dextrin, cyclodextrin and the like and xylitol, sorbitol, erythritol. As the flavoring agent, natural flavoring agents (tauumatin, stevia extract (for example, rebaudioside A, glycyrrhizin, etc.) and synthetic flavoring agents (saccharin, aspartame, etc.) can be used. For example, when the food composition of the present invention is prepared with a drink and a beverage, citric acid, liquid fructose, sugar, glucose, acetic acid, malic acid, fruit juice, and various plant extracts may be further included.

The present invention also provides a feed additive or feed comprising Lactobacillus genus WiKim0092 or its culture as an active ingredient.

When used as a feed additive, the composition may be 20 to 90% high concentrate or prepared in powder or granule form. The feed additives include organic acids such as citric acid, fumaric acid, adipic acid, lactic acid, malic acid, phosphates such as sodium phosphate, potassium phosphate, acid pyrophosphate and polyphosphate (polyphosphate), polyphenols, catechins, alpha-tocopherols, and rosemary. Extracts, vitamin C, green tea extracts, licorice extracts, chitosan, tannic acid, phytic acid, such as any one or more may be further included. When used as a feed, the composition may be formulated in a conventional feed form and may include common feed ingredients.

The feed additives and feeds include cereals such as milled or crushed wheat, oats, barley, corn and rice; Vegetable protein feed, such as feed consisting mainly of rapeseed, soybean, and sunflower; Animal protein feeds such as blood meal, meat meal, bone meal and fish meal; Sugar and dairy products, for example, may further include a dry ingredient consisting of various powdered milk and whey powder, and may further include a nutritional supplement, digestive and absorption enhancers, growth promoters and the like.

The feed additive may be administered alone or in combination with other feed additives in an edible carrier. In addition, the feed additive may be easily administered to the animal as a top dressing or mixed directly in the animal feed or in an oral formulation separate from the feed. When the feed additive is administered separately from the animal feed, it can be prepared in immediate release or sustained release formulation in combination with a pharmaceutically acceptable edible carrier, as is well known in the art. Such edible carriers may be solid or liquid, for example corn starch, lactose, sucrose, soy flakes, peanut oil, olive oil, sesame oil and propylene glycol. If a solid carrier is used, the feed additive may be a tablet, capsule, powder, troche or sugar-containing tablet or top dressing in undispersible form. When a liquid carrier is used, the feed additive may be a gelatin soft capsule or a formulation of syrup or suspension, emulsion, or solution.

In addition, the feed additives and feed may contain auxiliaries, such as preservatives, stabilizers, wetting agents or emulsifiers, solution accelerators and the like. The feed additive may be used in addition to the feed of the animal by acupuncture, spraying or mixing.

The feed or feed additive of the present invention is applicable to many animal diets, including mammals, poultry and fish.

The mammals can be used not only for pigs, cows, sheep, goats, experimental rodents, and experimental rodents, but also for pets (eg, dogs, cats), and the like as poultry such as chickens, turkeys, ducks, geese, pheasants, And can also be used for quail, etc., may be used in trout, etc. as the fish, but is not limited thereto.

The amount of the strain of Wikim0092 genus Lactobacillus included in the composition according to the present invention may be about 10 ⁶ to 10 ¹² cfu / g, for example, 10 ⁷ to 10 ¹¹ cfu / g, 10 ⁸ to 10 ¹⁰ cfu / g may be. In the case of administering the strain, it is preferable to administer it in a viable state, and it may be administered before ingestion or attenuated. In addition, in the case of using the culture supernatant, etc., the sterilization process through heat treatment may be additionally performed. The amount of strain and daily intake required to have minimal efficacy may vary depending on the body or health of the ingestor, but may generally be about 10 ⁶ to 10 ¹² cfu / g, such as 10 ⁷ to 10 ¹¹ cfu / g , 10 ⁸ to 10 ¹⁰ cfu / g.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

Wikim0092 of the genus Lactobacillus according to the present invention exhibits excellent antimicrobial activity against harmful pathogens (Clostrioides difficile), and as probiotics prevent the prevention of infectious diseases caused by human or animal suits, immunopotentiation, gastrointestinal diseases and harmful pathogens and It can be used in various ways for the purpose of treatment. Furthermore, it can be usefully used as a starter for fermentation.

Figure 1 is a molecular diagram showing the analysis of the 16S rRNA gene sequence of the genus WiKim0092 (Accession Number KACC 81073BP) strain Lactobacillus.
Figure 2 is the antimicrobial activity of the Clostridioides difficile JCM 1296 ^T of Wikim0092 (Accession Number KACC 81073BP) strain of Lactobacillus. (A) control, (B) WiKim0092 culture treatment group of the genus Lactobacillus.
Figure 3 shows Bacillus cereus ( Bacillus cereus KACC 10097), Streptococcus sanguinis KACC 11301 of the genus WiKim0092 (Accession No. KACC 81073BP) strain, Escherichia coli KACC11598) Staphylococcus aureus KCCM 11335) and Salmonella typhimurium KCCM 16862.

Hereinafter, the present invention will be described in detail through examples. The following examples are merely illustrative of the present invention, and the scope of the present invention is not limited to the following examples.

EXAMPLE

Example 1 Isolation and Identification of Lactobacillus Strains

Homogeneous colonies obtained by spreading the stock solution of kimchi extract on MRS medium were collected in a loop and incubated in MRS broth. DNA extraction was extracted using the QIAamp DNA Mini Kit (QIAgen, Germany). The extracted DNA was identified using a 1% agarose gel, and PCR was performed using the extracted genomic DNA as a template to amplify the 16S rRNA gene. 30 cycles were performed at extension 72 ° C. 1 minute 30 seconds. The obtained PCR product was analyzed by sequencing. Bacterial identification was performed by using EzBioCloud ( https://www.ezbiocloud.net/identify ) database to search for bacteria with the highest similarity to the sequencing of the 16S rRNA gene of the strain.

The strain isolated through the embodiment of the present invention is a sequence analysis of 16S rRNA gene for identification of microorganisms, GenBank Accession No. It was shown to have a nucleic acid sequence of CP027190 to CP027193. In addition, as a result of the analysis, the strain is Lactobacillus mudanjiangensis , Lactobacillus pentosus Lactobacillus genus strains such as showed the highest phylogenetic relationship (Fig. 1).

Thus, the microorganism of the present invention was named Lactobacillus sp. CBA3605 ( Lactobacillus sp. CBA3605), and was deposited on March 18, 2018 by the National Academy of Agricultural Science (Accession Number KACC 81073BP ).

Example 2: Confirmation of antimicrobial activity of WiKim0092 genus Lactobacillus

A single colony of WiKim0092 genus Lactobacillus isolated through Example 1 was inoculated in MRS liquid medium and incubated in a 30 ° C. incubator for 48 hours. The strain and the supernatant were separated by centrifugation, and the supernatant was prepared using a 0.2 µl pore size filter to prepare a strain culture from which bacteria were completely removed. The culture solution was concentrated twice using a vacuum concentrator.

In order to confirm the antimicrobial activity of the Wikim0092 genus Lactobacillus, Clostridioides ( Clostridioides) as a harmful pathogen difficile ) JCM 1296 ^T was prepared. The harmful pathogens were plated on CDC medium (BD BBL ™ CDC Anaerobe 5%, Sheep Blood Agar-Becton Dickinson), and paper disks were inoculated onto the medium on which the harmful pathogens were smeared. 100 μl of the concentrated Lactobacillus WiKim0092 culture solution was absorbed onto a paper disc, and after 24 hours, culture of harmful pathogens and culture inhibition by WiKim0092 in Lactobacillus were confirmed (FIG. 2). At this time, (A) of Figure 2 is the result of the control group not treated with the culture solution of WiKim0092 genus Lactobacillus, (B) is the result of the experimental group treated with the culture solution of WiKim0092 genus Lactobacillus.

As a result, as shown in Figure 2, it was confirmed that Clostridioides difficile culture inhibitory effect appeared in the paper disk of the group treated with the WiKim0092 culture solution of Lactobacillus.

Bacillus cereus KACC 10097, Streptococcus sanguinis JACC 11301, Escherichia coli KACC 11598), Staphylococcus aureus KCCM 11335) and Salmonella typhimurium KCCM 16862) pathogenic strains were incubated in TSA (Tryptic Soy Agar: Difco, USA) medium, respectively, and then inoculated with 100 μl of the culture supernatant sterilized in a 6 mm deep groove to confirm the antibacterial activity. As a result, Clostridioides difficile ) and several pathogenic microorganisms were confirmed to have the ability to inhibit growth (FIG. 2 and FIG. 3).

Example 3: Bacteriocin genome analysis of WiKim0092 genus Lactobacillus

DNA extracted for genome analysis of the Wikim0092 genus Lactobacillus was subjected to sequencing analysis through Pacific Biosciences (PacBio). NCBI's Prokaryotic Genome Annotation Pipeline (PGAP) identified one chromosome (2,494,909 bp) and three plasmids, including 16 rRNAs (5S, 16S, 23S). The genome of WiKim0092 of the genus Lactobacillus was registered as CP027190-CP027193 of NCBI. In particular, if the bacteriocins of Lactobacillus WiKim0092 genome is analyzed through Bagel4 (http://bagel4.molgenrug.nl/index.php), 65.86% and Lactococcin B (LCN-B) produced in Lactococcus lactis, Carnobacterium Lactobacillus with 60.85% homology with Carnocin_CP52 generated and identified in piscicola was identified as a novel bacteriocin producing strain (Table 1).

Analysis of the bacteriocin genome of WiKim0092 of the genus Lactobacillus

National Academy of Agricultural Science KACC81073BP 20180318

Claims (13)

CBA3605 { Lactobacillus sp., Genus Lactobacillus of accession number KACC 81073BP. CBA3605}. Lactobacillus genus CBA3605 (Lactobacillus sp CBA3605;. Accession No. KACC 81073BP), at least one of its culture or a Bacillus cereus (Bacillus cereus), including bacteriocins produced therefrom as an active ingredient and Streptococcus sanggwi varnish (Streptococcus sanguinis) Antimicrobial composition for the strain. delete Of infectious diseases caused by one or more strains of Lactobacillus sp. CBA3605 (Accession No. KACC 81073BP) or cultures thereof as Bacillus cereus and Streptococcus sanguinis Food composition for prevention or improvement. delete The method of claim 4, wherein
The food is a health functional food composition. The method of claim 4, wherein
The food is a beverage, bar or fermented milk. Of infectious diseases caused by one or more strains of Lactobacillus sp. CBA3605 (Accession No. KACC 81073BP) or cultures thereof as Bacillus cereus and Streptococcus sanguinis Prophylactic or therapeutic pharmaceutical composition. delete delete Lactobacillus sp. CBA3605 ( Lactobacillus sp. CBA3605; accession number KACC 81073BP) or a formal formulation comprising a culture thereof. Lactobacillus genus CBA3605 ( Lactobacillus sp. CBA3605; accession number KACC 81073BP) or a fermentation lactobacillus starter comprising a culture thereof. Feed or feed additive composition comprising Lactobacillus sp. CBA3605 (Accession No. KACC 81073BP) or a culture thereof.

Images