Malignant tumors are powerful enemies that cause blood vessels to help their greedy growth, damage neighboring tissues, and deploy many strategies to escape the body's defense system. Even worse, the release of circulating tumor cells (CTCs), which secretly move in the blood and flow to other parts of the body, is the transfer of cancer. Although CTC is dangerous, their presence is also a valuable indicator of a patient's disease stage. Unfortunately, finding a relatively small number of CTCs in trillions of healthy cells is like finding a needle in a haystack.
To solve this problem, researchers at the WYSS Institute at Harvard University have developed a protein that modifies human hemotonin, a protein called FcMBL that was originally used as a broad-spectrum pathogen capture agent to target CTCs. Using FcMBL-coated magnetic beads, the researchers were able to successfully capture 90% of seven different types of cancer cells.
The researchers said: "We are able to quickly isolate CTC from the blood. This new technology is very useful for the diagnosis of cancer. It is a very advanced biological system. This study heralds the birth of a new weapon for cancer war. In the second trial, the researchers implanted fluorescent markers in breast cancer mice, and after the tumor developed for 28 days, blood tests were used to determine the number of CTCs, then they mixed the blood FcMBL-coated beads and allowed the beads to float in the magnet. By measuring the speed of movement of normal cells and cancer cells, our magnetic beads are attached to fast-moving cancer cells. Then we tested other types of cancer, including non-small cell lung cancer, glioblastoma, etc. The same applies, and it is believed that through further argumentation, our new weapon may become a new tool for detecting cancer in the future."
[Sample requirements]
The collected nasopharyngeal swab samples should be transported at 2°C to 8°C and sent for inspection immediately, and the sample delivery and storage time should not exceed 48 hours.
[Testing method]
1. Before sampling, mark the relevant sample information on the label of the sampling tube.
2. According to different sampling requirements, use a sampling swab to sample in the nasopharynx.
3. The specific sampling methods are as follows:
a) Nasal swab: Gently insert the swab head into the nasal palate, stay for a while and then slowly turn to exit. Wipe the other nostril with another swab, immerse the swab head in the sampling solution, and discard the tail.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a swab, also immerse the swab head in the sampling solution, and discard the tail.
4. Quickly put the swab into the sampling tube.
5. Break the part of the sampling swab higher than the sampling tube, and tighten the tube cover.
6. Freshly collected clinical specimens should be transported to the laboratory within 48 hours at 2°C to 8°C.
[Explanation of test results]
After the sample is collected, the sampling solution turns slightly yellow, which will not affect the nucleic acid test result.
[Limitations of the test method]
1. For samples that are seriously contaminated due to improper storage after collection, the final test results will be affected.
2. If the sample is not stored at the specified temperature, the final test result will be affected.
Vtm Sampling Tube With Swab,Disposable Collection Tube Of Virus Samples,Hi Media Vtm Kit,Amylase Sample Collection Tube
Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com