Fungal immunomodulatory protein | |||||||||||
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Identifiers | |||||||||||
Symbol | FIP | ||||||||||
Pfam | PF09259 | ||||||||||
InterPro | IPR015339 | ||||||||||
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Fungal immunomodulatory proteins (FIPs) are a type of functional compound (other compounds include polysaccharides and triterpenoids) found in various species of fungi. FIPs are part of the immunoglobulin (ig) family, which are structurally similar to human antibodies, and can interact with human peripheral blood mononuclear cells (PBMCs), causing these cells to secrete different types of hormones and regulate cellular activity. [1]
The first FIP was discovered in 1989 by Japanese scientist Kohsuke Kino et al. from the water extract of the mycelium of Ganoderma lucidum, and was named Ling Zhi-8 (LZ-8). [2]
From then on, researchers have identified numerous structurally similar proteins from various types of fungi that also share a high degree of genetic similarity as well as physiological activities, and thus coined the term fungal immunomodulatory protein (FIP). [3]
Currently known FIPs [3] are listed below:
The Polyporales are an order of about 1800 species of fungi in the division Basidiomycota. The order includes some polypores as well as many corticioid fungi and a few agarics. Many species within the order are saprotrophic, most of them wood-rotters. Some genera, such as Ganoderma and Fomes, contain species that attack living tissues and then continue to degrade the wood of their dead hosts. Those of economic importance include several important pathogens of trees and a few species that cause damage by rotting structural timber. Some of the Polyporales are commercially cultivated and marketed for use as food items or in traditional Chinese medicine.
Lingzhi, Ganoderma lingzhi, also known as reishi, is a polypore fungus native to East Asia belonging to the genus Ganoderma.
The Polyporaceae are a family of poroid fungi belonging to the Basidiomycota. The flesh of their fruit bodies varies from soft to very tough. Most members of this family have their hymenium in vertical pores on the underside of the caps, but some of them have gills or gill-like structures. Many species are brackets, but others have a definite stipe – for example, Polyporus badius.
Ganoderma lucidum is a red-colored species of Ganoderma with a limited distribution in Europe and parts of China, where it grows on decaying hardwood trees. Wild populations have been found in the United States in California and Utah, but were likely introduced anthropogenically and naturalized.
Ganoderma applanatum is a bracket fungus with a cosmopolitan distribution.
Beta-glucans, β-glucans comprise a group of β-D-glucose polysaccharides (glucans) naturally occurring in the cell walls of cereals, bacteria, and fungi, with significantly differing physicochemical properties dependent on source. Typically, β-glucans form a linear backbone with 1–3 β-glycosidic bonds but vary with respect to molecular mass, solubility, viscosity, branching structure, and gelation properties, causing diverse physiological effects in animals.
Ganoderma is a genus of polypore fungi in the family Ganodermataceae that includes about 80 species, many from tropical regions. They have a high genetic diversity and are used in traditional Asian medicines. Ganoderma can be differentiated from other polypores because they have a double-walled basidiospore. They may be called shelf mushrooms or bracket fungi.
Ganoderic acids are a class of closely related triterpenoids found in Ganoderma mushrooms. For thousands of years, the fruiting bodies of Ganoderma fungi have been used in traditional medicines in East Asia. Consequently, there have been efforts to identify the chemical constituents that may be responsible for the putative pharmacological effects. There are dozens of ganoderic acids that have been isolated and characterized, of which ganoderic acid A and ganoderic acid B are the most well characterized. Some ganoderic acids have been found to possess biological activities including hepatoprotection, anti-tumor effects, and 5-alpha reductase inhibition.
Ganoderma tsugae, also known as hemlock varnish shelf, is a flat polypore mushroom of the genus Ganoderma.
Testicular receptor 4 also known as NR2C2 is a protein that in humans is encoded by the NR2C2 gene.
Decoy receptor 3 (Dcr3), also known as tumor necrosis factor receptor superfamily member 6B (TNFRSF6B), TR6 and M68, is a soluble protein of the tumor necrosis factor receptor superfamily which inhibits Fas ligand-induced apoptosis.
Cinobufagin is a cardiotoxic bufanolide steroid secreted by the Asiatic toad Bufo gargarizans. It has similar effects to digitalis and is used in traditional Chinese medicine.
This microRNA database and microRNA targets databases is a compilation of databases and web portals and servers used for microRNAs and their targets. MicroRNAs (miRNAs) represent an important class of small non-coding RNAs (ncRNAs) that regulate gene expression by targeting messenger RNAs.
Ganoderma curtisii is a wood-decaying polypore whose distribution is primarily in the Southeastern United States. Craig and Levetin claim to have observed it in Oklahoma.
Bolitotherus cornutus is a North American species of darkling beetle known as the horned fungus beetle or forked fungus beetle. All of its life stages are associated with the fruiting bodies of a wood-decaying shelf fungus, commonly Ganoderma applanatum, Ganoderma tsugae, and Ganoderma lucidum.
Medicinal fungi are fungi that contain metabolites or can be induced to produce metabolites through biotechnology to develop prescription drugs. Compounds successfully developed into drugs or under research include antibiotics, anti-cancer drugs, cholesterol and ergosterol synthesis inhibitors, psychotropic drugs, immunosuppressants and fungicides.
Ganoderma sessile is a species of polypore fungus in the Ganodermataceae family. This wood decay fungus is found commonly in Eastern North America, and is associated with declining or dead hardwoods. There is taxonomic uncertainty with this fungus since its circumscription in 1902.
Scytalidium ganodermophthorum is an anthroconidial ascomycete fungus in the Scytalidium genus. It is also known by its teleomorph name Xylogone ganodermophthora. It is the cause of yellow rot in lingzhi mushrooms and it is used in spalting as a pigmenting fungi.
Ganoderma microsporum is a species of Ganoderma mushroom native to Taiwan that grows on willow trees. The specific epithet microsporum refers to the small size of its spores, measuring 6–8.5 by 4.5–5 μm, which is smaller than the spores of all other known types of Ganoderma.
Ganoderma microsporum immunomodulatory protein or GMI is a protein discovered from the mushroom species Ganoderma microsporum. GMI is a pure protein composed of 111 amino acids and exists in nature as a tetramer.