This disclosure is directed to biological marker and cell preservative compositions. Methods of preserving biological markers and/or cells in a blood or other biological sample, and kits for preserving biological markers and/or cells in a blood or other biological sample are also described.

The present invention relates to the compositions, methods, and associated devices (1) for the cryopreservation of biological specimens that enables to freeze and thaw the entire specimen by straightforwardly protecting its three-dimensional architecture. The invention comprises compositions including reagents to protect the specimen and preserve the physiological conditions. The methods comprise fewer steps excluding the need for other solutions used in conventional methods. The methods also eliminate stressful steps for biological specimens in conventional methods including harvesting, pipetting, centrifuging, and transferring. With this invention, the entire content of the specimen can be frozen, stored long-term in a single cell culture vessel with one of the associated devices (1) described here, and then thawed while still in the device (1). The biological specimens frozen by that method render high post-thawing viability. Moreover, the invention reduces cryoprotectant-related toxic events, human errors, and contamination risk.

The present disclosure provides a cell patch cryopreservation solution, which includes: a cryoprotectant, a buffer, a reducing agent, a calcium channel inhibitor and an apoptosis inhibitor. The present disclosure also provides a method of cryopreserving a cell patch by using the aforementioned cell patch cryopreservation solution. The cell patch cryopreservation solution and the method of cryopreserving a cell patch provided by the present disclosure can maintain the structural integrity and the cell activity of the cell patch.

A powder formulation for preserving tissue and organ function, and more particularly to shelf stable powder formulations that can be reconstituted at point of use, including during a fat grafting process, coronary artery bypass graft surgery, and peripheral bypass surgery, or other grafting/transplant surgery prior to or during the medical procedure to preserve the tissues/organs used in these procedures. The powder formulation includes a reducing agent; an antioxidant; a sugar; a nitric oxide substrate; a buffering agent; and physically acceptable salt. Also provided are a method of preparing an organ or tissue preservation solution by reconstituting the powder formulation, and a method of preserving tissue or an organ using same.

It is an object of the present invention to provide a composition for cryopreservation while reducing cell damage due to cryopreservation and to provide a cryopreservation method while reducing cell damage due to cryopreservation. A composition for cryopreservation of a cell or biological tissue, the composition comprising a nanoparticle that comprises amphiphilic molecules as a constituent, wherein the amphiphilic molecules form a monolayer or bilayer, is produced.

An aspect of the present disclosure provides a solution for transporting or storing a body fluid sample, the solution including a substance selected from the group consisting of kanamycin, G418, streptomycin, maltotriose, N-acetylmuramic acid, and glucose as an active ingredient.

During ageing, egg cells display a gradual loss of cohesin complexes. The cohesin loss eventually causes sister chromatids to separate prematurely, which leads to aneuploidy. The inventors engineered an artificial cohesion system, which is a complex for chromatid or chromosome tethering to reduce, for example, age-related premature separation of sister chromatids in eggs. The artificial cohesion system is a complex, which tethers chromosomes or chromatids so that e.g. the risk of aneuploidy is reduced. Said complex comprises (I) one or more first protein(s) and (II) one or more second protein(s), wherein the (I) first and the (II) second protein(s) each comprise (i) a chromatin-binding component, (ii) a protein-binding region being N-terminal of the chromatin-binding component, (Hi) a protein-binding region being C-terminal of the chromatin-binding component. The present invention also includes nucleic acid molecule(s) encoding said complex. Furthermore, several in vitro methods concerning the complex or the nucleic acid molecule(s) encoding said complex also form part of the invention.